/**
 * Copyright (c) 2014 Baidu, Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * 
 */
package com.baidu.rigel.biplatform.ma.report.utils;

import java.util.LinkedHashMap;

/**
 * 处理LinkedHashMap的工具类
 * 
 * @author zhongyi
 *
 */
public final class LinkedHashMapUtils {
    
    /**
     * 构造函数
     */
    private LinkedHashMapUtils() {
        
    }
    
    /**
     * 
     * @param column
     * @param index
     */
    public static <T> LinkedHashMap<String, T> buildLinkedMapWithNewEntry(LinkedHashMap<String, T> oldMap,
            T entryValue, String entryKey, int index) {
        LinkedHashMap<String, T> newMap = new LinkedHashMap<String, T>();
        if (index >= oldMap.size()) {
            oldMap.put(entryKey, entryValue);
            return oldMap;
        } else {
            int i = 0;
            for (String key : oldMap.keySet()) {
                T value = oldMap.get(key);
                if (index == i) {
                    newMap.put(entryKey, entryValue);
                }
                newMap.put(key, value);
                i++;
            }
        }
        return newMap;
    }
        
}
